ASROCK Z77 Pro3 Handbuch Seite 32

Power LED Header
(3-pin PLED1)
(see p.2, No. 19)
Chassis and Power Fan Connectors
(4-pin CHA_FAN1)
(see p.2, No. 7)
(3-pin CHA_FAN2)
(see p.2, No. 21)
(3-pin PWR_FAN1)
(see p.2, No. 35)
CPU Fan Connectors
(4-pin CPU_FAN1)
(see p.2, No. 1)
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin
CPU fan still can work successfully even without the fan speed control function.
If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this
motherboard, please connect it to Pin 1-3.
(3-pin CPU_FAN2)
(see p.2, No. 2)
ATX Power Connector
(24-pin ATXPWR1)
(see p.2, No. 8)
32
FAN_SPEED_CONTROL
CHA_FAN_SPEED
+12V
GND
FAN_SPEED_CONTROL
CPU_FAN_SPEED
+12V
GND
1 2 3 4
GND
+12V
CPU_FAN_SPEED
12 24
1 13
ASRock Z77 Pro3 Motherboard
Please connect the chassis
power LED to this header to
indicate system power status.
The LED is on when the system
is operating. The LED keeps
blinking in S1/S3 state. The
LED is off in S4 state or S5
state (power off).
Please connect the fan cables
to the fan connectors and match
the black wire to the ground pin.
CHA_FAN1 and CHA_FAN2
supports Fan Control.
Please connect the CPU fan
cable to the connector and
match the black wire to the
ground pin.
Pin 1-3 Connected
3-Pin Fan Installation
Please connect an ATX power
supply to this connector.